Machine for pressing and joining articles of glass.



No. 650,780. Patented May 29, moo. 0. CARLSTRUM.

MACHINE FOR PRESSING AND JOINING ARTICLES 0F GLASS.

(Application filed Sept. 5, 1899.)

(No Model.) 2 Sheets-Sheet l..

Al mrney THZ mums vcrzns ca, Pum'oumo" wnsumamw n cy No. 650,780. Patented May 29, I900.

0. CARLSTROM.

MACHINE FOR PRESSING AN'D' JOINING ARTICLES 0F GLASS.

(Application filed Sept. 5, 1899.) (No Model.) 2 Sheets-Sheet 2.

J' l g 6 IIIII IIIII JIIIIIII'IIII WITNESSES INVENTOR flim flfi 0. m

A Home THE mans PEYERS co Pumouma. WASHINGTON o c.

PATENT OFFICE.

OSCAR oARLsTRoM, or rmrm, OHIO.

MACHINE FOR Pazsmc ANo JOINiNG ARTICLES OF GLASS.

SPECIFICATION forming part of Letters Patent 1%. 65G,-780, dated May 29, 1900.

Application filea September 5, 1299. Serial No. 729,542. (1T0 model;)

To all whom it may concern:

Be it known that I, OsoAn CARLSTROM, re= siding at Tiffin, in the State of Ohio, have in-* vented certain new and useful Improvements in Machines for Pressing and Joining Articles of Glass, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to machines for molding and applying glass stems to goblets'and like articles wherein a bowl or. globe is joined to a stem.

The object of the invention is to produce a machine in which the stem shall be quickly formed and attached to the bowl of a goblet and in which the sprue-button or remaining waste-piece at the base of the stem shall be mechanically removed, so that the goblets are turned out complete; and the improvement consists in Various constructions and combinations of elements, substantially as hereinafter set forth in the claims.

. The machine forms the stem and applies it while the parts are in horizontal position.

Figure 1 is a plan of the machine with the covers of the stem-mold and of the plungerchamber turned back and said mold and chamber separated. Fig. 2 is a side elevation of the machine with the cover of the stem-mold in place. Fig. 3 is a side elevation with parts in position for molding and attaching the stem to the bowl. Fig. 4 is adetail elevation at the bowl end of the stem-mold. Fig. 5 is a longitudinal central section of the machine, parts broken away.

The numeral 1 indicates the body of the stem-mold. This mold is of metal, with a hinged cover 2, and the stem is formed partly in the body and partly in the cover. The mold may have any desirable form and ornamentation. At the front end of the mold there is a recess 3, into which the bottom of the bowl of the goblet is introduced and held. The bowl is usually blown and attached to theblow-tube when the stem is applied and may be held by the tube in the recess 3, or any suitable clamp, rest, or catch may be applied to the end of the mold to assist in holding the bowl to the mold while the stem is applied.

The stem-mold is held in suitable guideways on the base A, so that the entire mold may have a longitudinal movement, as will be ex plained.

6 and 7 indicate the ways or track and guide. A dovetail form of connection is preferable. The plunger-chamber 11 may be the segment of a cylinder or of othersuitable form inside. This chamber has a hinged cover 12, which swings open to permit access to the chamber and completes the top wall of the chamber. A plunger 14 fits closely into the chamberand may be moved lengthwise of the chamber by lever 15, which lever is connected to the plunger by link or pitman 16. The lever 15 is connected to standard 17 by a link 18, suitable pivots being provided, so as to permita direct longitudinal reciprocation of the plunger in the chamber.

The chamber 11 is fixed to base A. The plunger may be drawn back and the cover lifted, when a quantity of plastic glass may be placed in chamber 11 sufficient to make astem for a goblet, and preferably a little material in excess of the amount required for the stem will be inserted in the chamber, and

mold. The swinging of lever 21 in the direc tion of the arrow, Fig. 3, draws the stem-mold on the guideways 6 7 (so that the end of the mold comes close to the open end of the plunger-chamber) by means of the link with slotand-pin connection, as described. A reverse movement of the lever pushes the stem-mold away from the plunger-chamber, but permits a lost motion equal to the length of slot 23.

The link 22 has upwardly-projecting hooks 24 and 25, which hooks engage the inclined surfaces of lugs 26 and 27 on the covers 2 and 12. These hooks are so arranged that the link 22 serves not only to reciprocate the stemmold on its base, but to lock down the covers of stem-mold and plunger-chamber when the lever 21 pulls link 22 in the proper direction. A reverse movement of link 22 unlocks the hinged covers and pushes back the stem-mold from the plunger-chamber.

The stem-mold is provided with a breaker or draw plate 31 at the end next the plunger chamber. This plate 31 forms a partial partition or separation of the stem-mold from the plunger-chamber and is just below or beyond the base of thecompleted stem. A somewhatsimilar plate 32 is at the end of the plungerchamber which is toward the stem-mold. The plastic material which forms the stem is forced through the holes in partitions 31 and 32 by the action of plunger 14. These partial partitions may be in halves and connected to the body and cover of the mold and chamber by screws or other convenient connections, so as to be removed or replaced.

The cover 2 preferably has the perpendicularly-movable cutter or breaker 37, which is held up by a spring 38. The cutter or breaker moves close to the end of the stem-mo] d when it is depressed by the hand of the workman and when depressed breaks off any sprue or jet that may remain on the base of the stem outside of the plate 31.

The link 22 may be duplicated, as at 22, at the rear of the stem-mold, said link 22 being slotted and pivoted to one fork of lever 21. Such a duplicate link gives strength and direct movement to the stem-mold; but this is not essential. Of course link 22 does not require cover-retaining hooks like the hooks 25 and 2t.

The covers may have handles by which they are lifted. Such a handle is shown on cover 12 at 39. The entire machine is kept at a high temperature while in use by the application of the glass heated to such degree as to be plastic, or the machine may be heated by any suitable means to prevent chilling of the glass.

Assuming the covers 2 12 to be raised, plunger 14 drawn out, and the parts generally as in Fig. 1, a quantity of hot glass is placed in chamber 11 and the lid 12 closed. Lid or cover 2 is also closed. Then by swinging lever 21 in the direction of the arrow, Fig. 3, the hooks 2i and 25 on link 22 engage the lugs 26 27 on the covers 2 and 12 and lock these covers down firmly. A further pressure of the lever 21 brings the stem-mold close to the plunger-chamber. The bowl of the goblet is then held (usually by a second workman) at recess 3. The lever 15 is then swung to drive in plunger 14, which presses the plastic glass into the stem-mold through the openings in plates 31 32. The stem is formed in the mold and by the pressure is attached to the bowl of the goblet or like article. The lever 21 is then reversed, pushing the stem-mold back from the pl un ger-chamber and unlocking both chambers. The movement of plate 31 away from plate 32 draws out and generally breaks the stemfrom the residual mass in chamber 11; but broken or not it is generally desirable to depress plunger or breaker 37, which removes every trace of sprue or jet from the base of the article. The cover 2 is then lifted and the goblet or other article removed, when the steps are repeated for another article.

It is desirable that the opening through plates 31 and 32 be as small as feasible, so that the largest possible amount of the surface of the stern be'subjected to pressure. The plates 31 32 are preferably removable, so that the size and form of opening maybe adjusted to the conditions of the work,such as quality or temperature of glass.

The stem-mold may be removed and replaced by other molds of dillerent forms, so that different styles of work can be done on the machine by making such change.

hat I claim is- 1. In a machine for molding and attaching glass stems to goblets and like articles, a fixed plunger-chamber, a movable stem-mold in line with such chamber, means for moving such stem-mold toward and from the plungerchamber, and a movable breaker connected to the stem-mold, whereby the sprue may be 9 5 broken from the stem, all combined substantially as described.

2. In a machine for molding and applying stems to glass articles, the combination of the longitudinally-movable stem-mold,thehinged 10o cover to said mold having a projecting lug, the fixed plunger-chamber, a lever pivoted to said chamber, and a link connecting said lever to the stem-mold and permitting a lost motion between the parts, said link havinga hook in position to engage the lug on the mold-cover, and thus fasten the cover and move the mold at a single operation, substantially as described.

3. In a machine of the character described, 1 10 the fixed plunger-chamber having a hinged cover provided with a projecting lug, the movable stem-mold having a cover and lug as described, a lever pivoted to the plungerchamber, a link connected to said lever and to the stem-mold by slot-and-pin connection, said link having hooks which engage the lugs on both covers to lock the same while moving the stem-mold, substantially as described.

4. In a stem forming and applying machine 1 20 as described, the combination of a longitudinally-movable stem-mold having a partial partition at its base, a fixed plunger-chamber having corresponding partition at the end next the stem-mold, means for moving the 12 stem-mold toward and away from the plunger-chamber, and means for pressing the plastic material from the plunger-chamber into the stem-mold, substantially as described.

5. In a machine of the character described,

a longitudinally-movable stem-mold having In testimony whereof I aflix my signature removable partition-plate at the end next the in presence of two Witnesses. plunger-chamber, the plunger-chamber havr ing removable partition-plate as described, OSCAR OARLSTROM' 5 and means for moving the stem-meld toward Witnesses:

and away from the plunger-chamber, sub- W. A. BARTLETT, stantially as described. M. GIUsTA. 

